Fluid-controller



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6 J! 0. MAGEVITT.

FLUID CONTROLLER. v

No. 425,234. PatexitedApr. s, 1890.

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PATENT JOHN C. MACEVITT, OF BROOKLYN, NEW YORK.

FLUlD-CONTRO LLER.

SPECIFICATION forming part of Letters Application filed November 8,1887.

To aid whom it nmy concern.-

Be it known that I, JOHN C. MACEVITT, a citizen of the United States,residing at Brooklyn, county of Kings, and State of New York, haveinvented certain new 'and useful Improvements in Fluid-Controllers,fully described and represented in the following specification and theaccompanying drawings, forming a part of the same.

This invention relates to improvements in clamps for fluid-tubes.

The object of the invention is to provide a simple, inexpensive, andreliably-operative clamp for controlling the flow of a fluid through atube of flexible material.

One of the uses to which this invention is particularly applicable is inconnection with nursing-bottles. It may, however, as will be readilyseen, be used equally well in connection with syringes, douches,irrigators, &c.

As a full understanding of the invention can be best given by anillustration and a description of the same, such description will now begiven, reference being had to the accompanying drawings, in which-Figure l is a side view of my improved clamp, showing the same appliedto a small section or piece of tubing of flexible material. Fig.2 is aperspective view of the clamp, and Fig. 3 is a similar view of a slightmodifica tion of the same.

As shown in the drawings, the several parts of the clamp, with theexception of the slide G, are made from but a single piece ofspringwire. In the formation of these several parts a piece ofspring-wire of a length suitable for the purpose is bent at a shortdistance from its center, so as to form the ring B, which is then bentup at about right angles to the two straight long and short portions ofthe wire. The short portion of the wire is then bent to form thepressing-surface O and the leg F. The longer portion is then so bent asto form the leg H, pressing-surface D, and square portion E, whichsquare portion will be at right angles to the legs F and H, and willinclose the pressing-surface O, as shown in Fig. 2, so as to preventsaid pressing-surface from springing out of place. When the parts havebeen thus formed, a slide, as G, will be fitted over the legs F and H atthe ring B, where they are drawn against each other and in close thesame, as shown.

Patent No. 425,234, dated April 8, 1890.

Serial No, 254,628. (No model.)

The purpose of the ring B and square portion E is to inclose the tube911 which the clamp is placed and keep the opposed pressing-surfaces Oand D in operative position. The slide G's shown in the drawings in itsnormal position, or the position it will occupy when the clamp is not inuse.

The modification shown in Fig. 3 differs from the construction justdescribed, in that it has no square portion E.

The manner of using the clamp is as follows: When the clamp is not inuse, the slide G will, as before stated, occupy the position in which itis shown in the drawings. When it is desired to diminish the flow ofliquid through the tube to which the clamp is attached-say to one-halfthe capacity of the tube-the slide G will be moved along the legs F H toabout midway of the length of said legs. This movement of the slide Gwill cause the pressing-surfaces G D to be drawn toward each other, andthereby press the tube between them, and thus contract the openingthrough said tube. When it is desired to stop entirely the flow throughthe tube, the slide G will be moved up against the square portion E,when the opening through the tube will be closed and no liquid will beallowed to pass through the same. To put the clamp out of operation,done is to move the slide G back against the ring B.

What I claim is 1. A clamp for fluid-tubes, consisting of the legs F andH, the ring 13 at one extremity thereof, pressing-surfaces O D at theother extremity thereof, and the slide G, for pressing said surfacesagainst the tube, substantially as described.

2. A clamp for fluid-tubes, consisting of the legs F and H, the ring 13at one extremity thereof, pressing-surfaces C D at the other extremitythereof, square portion E, inclosing said surfaces, and the slide forpressing said surfaces against the tube, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN C. MACEVITT. lVitnesses:

DANIEL FERRY, WM. J. Howrn.

all that is necessary to be

